Rotatable electric contactor



(No Model.)

J. W. CURRY. ROTATABLE ELECTRIC GONTAGTOR.

No. 529,898. Patented Nov. 27, 1894.

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, UN TE STATES PATENT OFFICE...

JOHN W. CURRY, or CAIRO, ILLINOIS.

ROTATAB LE ELECTRIC CONTACTO R.

SPECIFICATION forming part of Letters Patent No. 529,898, dated November27,1894.

' Application filed my 9, 1894- Serial Ia.- 516.945- (Nomotlel) To allwhom it may concern;

ss it known that 1, JOHN W. CURRY, f Calro, in the county of Alexanderand'State of Illinois, have invented certain new and useful Improvementsin Rotatable Electric Contactors; and I hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, forming part of thisspecification.

This invention has reference to improvements in rotatable electriccontactors.

The object of the invention is to so construct an electrical contactdevice that electrical connections may be maintained between the arms ofa main circuit, ending in stationary contact plates, and the arms of alocal circuit, mounted on a rotatable device, in a more perfect mannerthan heretofore.

The invention consists in the combination with fixed circular contactplates connected with the respective arms of the main circuit, of arotatable mechanism provided with the peculiar adjustableinsulating armscarrying contact wheels bearing on the circular con-, tacts and inelectrical connection with de vices carried by the rotatable mechanism.

The invention also consists in such other novel features of constructionand combination of parts as may hereinafter be more fully described andpointed out in the claims.

Figure 1 represents a viewof the improved electric contactor shown inconnection with a rotatable fan carrying electric lamps with which it isdesired to maintain electric connection. Fig. 2 represents a similarenlarged view partially in section. Fig. 3 represents a plan view of thecontactor.

Similar numbers and letters of reference designate corresponding partsthroughout the views.

In the drawings 5 indicates a base plate formed of insulating materialand having a central bearing. secured to any suitable support ofordinary construction. In the construction shown in the drawings it isdesigned to be secured to the ceiling of a room or to abracket dependingfrom the ceiling. To the lower surface of this base are secured thecircular contacts 6 and 7 concentric with each other and with This baseis adapted to be.

the axial center of the base, being separated .by insulating material 8.To the contact 6 electrical circuit of which the Wires 0 and drespectively form the positive and negative arms, these wires in actualconstruction being hidden from view.

To that portion of the shaft 9 adjacent to its bearing is secured aclamping fitting formed of four angular brackets having segmentalportions 13-13 for partially embracing the shaft and each having arms14: and 15, the arms of the respective brackets being secured togetherby the clamping-screws 16-16, or 1717, to firmly grasp the shaft 9.Between the arms 15 of the brackets and pivoted on the screws 17-17 arethe insulating arms 18 and 19 which may be adjusted toward the base 5and can be secured in position by tightening the screws. These arms 18are vertically perforated in lines with the contacts 6 and 7 and inthese perforations are secured the screw-threaded shanks 20 and 21 ofthe frames 22 and 23 which are adjusted by the nuts 24-2et and 25-25. Inbearings of the frames 22 and 23 are mounted the shafts 26 and 27' whichare electrically connected each with its arm 0, or d, of the localcircuit. On the shafts 26 and 27 are journaled the contact-wheels 28 and29 by which electrical contact is maintained with the contacts 6 and 7as the shaft 9 rotates.

The operation of the device will be readily understood from thedescription of its operation. The wires a and 19 being connected withany source of electrical energy, a circuit will be created through thesewires to the contacts 6 and 7, thence through the wheels 28 and 29 tothe shafts 26,and 27 inthe local circuit in which the electrical devicewhich it is sought to operate is included, this circuit being maintainedwhether the shaft 9 is frames having shanks vertically adjustable.

in the insulating arms, shafts secured in these frames and connected inthe local circuit, and contact-Wheels journaled on said shafts withwhich they are in electrical contact and bearing on the annular contactsof the base, as described.

2. The combination with the base 5, and the annular contacts 6 and 7mounted thereon, each connected with an arm of the main circuit, of theshaft 9 jonrnaled in the base and carrying an electrically operateddevice, brackets having the arms 14-14: and 15-15 clamped to said shaft,the screws 16 and 17 for securing the arms together, the insulating-arms1S and 19 pivoted on the screws 17 and secured between the arms 15, theshanks 20 and 21'extending through perforations in these arms and havingthe frames 22 and 23, the nuts 21 and 25 for securing the shanks inplace, the shafts 26 and 27 mounted in'the frames, the contact-wheels 28and 29 jonrnaled on said shafts and held in contact with the annularcontacts 6 and 7, and a local circuit, in which the device carried bythe shaft is included, connected with the shafts 26 and 27, as and forthe purpose described.

In witness whereof I have hereunto set my hand.

JOHN W. CURRY.

W'itnesses:

REED GREW, MILES FDK. GILBERT.

